FM -H10-44 Diesel Electric Yard service Switcher build dates dated 1944-1950 still being used in the 1970and 80's Z scale 1:220 Fairbanks Morse. total of 195 were bilt for American railroads. No Chassis at this time. powered by the shorty parts!
You will find chassis at this link
visit this shop:
https://www.shapeways.com/shops/the-z-maker
Z Scale H10-44 Frame in Brass (7GPUBZYRA) by shortpainter (shapeways.com)